Improvement in drawing-frames



'll'NI'I'ED STATES JOHN MCDONALD, OF GONOORD, NORTH CAROLINA.

IMPROVEMENT IN DRAWING-FRAM ES.

Specification forming part of Letters Patent No. 131,766, dated October1, 1872.

To alb'whom it may concern:

1 Be it known that I, JOHN MCDONALD, manufacturer, of the town ofConcord, in the county of Oabarrus and State of North Carolina, haveinvented a certain new and useful Improvement in Machinery for theManufacture of Cotton, .Wool, and other Fibrous Materials into Rovingand Yarn; and I do hereby declare the following to be a clear, full, andexact description thereof, reference being had to the accompanyingdrawing and letters of reference marked thereon.

The nature of my invention consists in applying to the slivers ofcotton, as they pass from one pair of rollers to another in the severalconveying and drawing operations through which the cotton passes fromthe cards to the twisting of it in the spinning operation, collarshaving converging apertures resembling the section of the sliver, which,by smoothing down any loose or projecting fibers upon the sliver, avoidwaste by preventing the fibers from becoming detached, and, restingtangentially against the faces of the rollers, burnish them and preventthe sliver from adhering to them, and enable me to dispense with theprocess of varnishing the rollers.

I will now proceed to "describe the mode in which the said invention ismade and operated, referring, in so doing, to the drawing annexed,

. which is made of full working size;

Figure 1 shows fa plan view; Fig. 2 shows a horizontal section of thisinvention; and Fig.3, a vertical section.

The same letters of reference apply to the same parts in the severalfigures.

A represents a sliver of carded cotton; B

and B a pair of rollers, between which it passes to a second pair ofrollers, B and B smooth by the collar D resting tangentially W andrubbing against them. i

The collar D is preferably made of wood 0 other light material, such ashorn, rawhide, or hard rubber, but may be of metal. The effect of usingit is found to be a considerable saving of cotton, greater cleanlinessof the mill, and the varnishing of the drawing-rollers becomesunnecessary.

Having thus described my invention, I do not broadly claim theapplication of any converging collar to slivers of fibrous materials incourse of preparation for spinning; but

What I claim as new and useful, and desire to secure as such by LettersPatent, is-

The collars. D with converging apertures applied to the slivers ofcotton or any fibrous material during the process of extending theslivers between the carding and spinning operations, said collarsresting tangentially on the roller-faces,- and cleaning and burnishin g7 them, as described.

- JOHN MCDONALD.

Witnesses: G. B. DUNGAN,

WM. F. JOHNSON.

